Ryobi ZRP854 ONE Plus 18V Cordless Lithium-Ion 2 in. Brad Nailer (Certified Refurbished) Contact actuated mode for production speed up to 60 nails per minute Tool less depth-of-drive adjustment helps protect work surface allows proper setting of nail heads Convenient adjustment dial regulates air pressure for optimum results Dry-fire lockout feature extends tool life - Tool-less jam release for easy access to clear nails Low nail indicator to quickly and easily see when it is time to re-load